iommu: Add iommu_iova_to_phys_hard
Some IOMMU hardware implementations provide hardware translation
operations that can be useful during debugging and development. Add a
function for this purpose along with an associated op in the iommu_ops
structure so that drivers can implement it.
Change-Id: I54ad5df526cdce05f8e04206a4f01253b3976b48
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index b06d935..947d03d 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1266,6 +1266,15 @@
}
EXPORT_SYMBOL_GPL(iommu_iova_to_phys);
+phys_addr_t iommu_iova_to_phys_hard(struct iommu_domain *domain,
+ dma_addr_t iova)
+{
+ if (unlikely(domain->ops->iova_to_phys_hard == NULL))
+ return 0;
+
+ return domain->ops->iova_to_phys_hard(domain, iova);
+}
+
static size_t iommu_pgsize(struct iommu_domain *domain,
unsigned long addr_merge, size_t size)
{